Symptom AssessmentDepressionQuestionnairesSeverity of Illness IndexBehavioral SymptomsPsychiatric Status Rating ScalesTreatment OutcomeTime FactorsQuality of LifeAffective SymptomsProspective StudiesPrevalenceFollow-Up StudiesAnxietyRisk FactorsDepressive DisorderCross-Sectional StudiesStress Disorders, Post-TraumaticLongitudinal StudiesFatigueStress, PsychologicalAsthmaRetrospective StudiesSchizophreniaRespiration DisordersPainCoughLower Urinary Tract SymptomsSchizophrenic PsychologyGastroesophageal RefluxPsychometricsPsychotic DisordersAge FactorsGastrointestinal DiseasesOccupational DiseasesSex FactorsComorbidityUrination DisordersRespiratory Tract DiseasesChronic DiseaseMagnetic Resonance ImagingCohort StudiesAdaptation, PsychologicalPsychophysiologic DisordersUnited StatesHeadacheRespiratory SoundsPersonality InventoryProdromal SymptomsHot FlashesReproducibility of ResultsAnalysis of VarianceDyspneaDyspepsiaIrritable Bowel SyndromeLogistic ModelsHealth StatusAnxiety DisordersRegression AnalysisHallucinationsPain MeasurementConstipationPredictive Value of TestsNeuropsychological TestsDelusionsDepressive Disorder, MajorDiagnostic and Statistical Manual of Mental DisordersOccupational ExposureRecurrenceLife Change EventsAffectAcute DiseaseSelf ReportMental DisordersTomography, X-Ray ComputedHealth SurveysSyndromeCognition DisordersCase-Control StudiesSleep DisordersCognitive TherapyAntipsychotic AgentsFlatulenceBrainModels, PsychologicalAttention Deficit Disorder with HyperactivitySocioeconomic FactorsHeartburnRhinitisPrognosisPremenstrual SyndromeAttitude to HealthActivities of Daily LivingSensitivity and SpecificityIrritable MoodPilot ProjectsInterviews as TopicDisease ProgressionModels, BiologicalPatient Acceptance of Health Care